126 GEO. H. HORN, M. D. 



glabrous species, and the thorax scarcely broader than the head. In 

 this species the mentum tooth becomes very broad and obtuse, approach- 

 ing in this respect Aphsenops, in which the mentuiu has no tooth. The 

 upper surfoce of the body is provided with setae, arising from punctures, 

 those on the head being short ; the thorax has one on each side about 

 its middle, the elytra have three each, arranged in a row, one near the 

 base, another median, and a third near the apex. 



Science is indebted to E. I). Cope for this interesting addition to our 

 fauna (being our smallest species) collected in Erhart's cave, Mont- 

 gomery County, Virginia. 



A. pubescens, pale testaceous, shining, head oval, attenuate anteriorly, finely 

 alutaceous, and with two longitudinal, faintly impressed lines convex intern- 

 ally. Thorax moderately convex,, glabrous, one-third broader than long, tra- 

 pezoidal, narrower behind, sides broadly rounded, sinuate posteriorly, angles 

 acute and prominent, a longitudinal median line and two basal impressions, 

 anteriorlj' feebly eraarginate, base slightly produced and emarginate at mid- 

 dle. Elytra oval, moderately convex, with strise evanescent at the sides and 

 apex, base broadly rounded, humeri distinct, obtuse, surface clothed with ra- 

 ther dense sub-erect pubescence, third stria with three setigerous punctures. Be- 

 neath finely and more sparsely pubescent. Length .23 inch. 



Easily known by its pubescence, form of thorax, and very acute 

 hind angles. The form of thorax is very nearly that of Trechus ru- 

 bens. The pubescence covering the surface of the body is exceedingly 

 fine in this and the preceding species, requiring a good lens for its 

 detection. 



Collected in Cave City cave, by Mr. Chas. Sonne. A single speci- 

 men in the cabinet of Dr. LeConte. 



Some of the European Anophthalmi are said to be provided with 

 eyes. Among the specimens I have been able to examine, none of ours 

 have that reticulation and peculiar clearness of the side of the head 

 thought to be an evidence of the presence of an organ of vision. The 

 species in which the eyes (?) occur are not found in caves but under 

 stones on the surface of the ground, and generally in dense damp 

 forests. 



In our collections, four species of Anophthalmus are found. For 

 the convenience of students I append a table. 



Glabrous species. Humeral angles of thorax obliquely rounded. 



Thorax much longer than i>road, angles rectangular Telkampfiii. 



Thorax slightly longer than broad, angles acute Menetriesii. 



Pubescent species. Humeral angles obtuse. 



Thorax convex, angles acute, prominent pubescens. 



Thorax flattened, angles rectangular pusio. 



